/** Demo WindowAdapter  */
package gui;

import java.awt.*;
import java.awt.event.*;

public class FrameAltF4 extends Frame
{
    class MeinAdapter extends WindowAdapter
    {
        public void windowClosing( WindowEvent e )
        {
            System.exit(0);
        }
        public void windowIconified( WindowEvent e )
        {
            System.out.println( "Fenster ikonisiert" );
        }
    }

public FrameAltF4()
{
     super();
     addWindowListener( new MeinAdapter() );
}

public static void main( String [] args ){
    FrameAltF4 fa = new FrameAltF4();
    fa.setSize( 123, 234 );
    fa.setVisible( true );
}
}